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Commission Regulation (EEC) No 2568/91Show full title
Commission Regulation (EEC) No 2568/91 of 11 July 1991 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis
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Revised version PDFs
- Revised 20/10/20193.52 MB
- Revised 04/12/20163.60 MB
- Revised 11/10/20163.55 MB
- Revised 04/08/20163.60 MB
- Revised 16/10/20153.42 MB
- Revised 01/01/20153.68 MB
- Revised 01/03/20143.69 MB
- Revised 01/01/20142.84 MB
- Revised 09/08/20122.49 MB
- Revised 01/04/20112.46 MB
- Revised 01/10/20081.42 MB
- Revised 01/01/20081.42 MB
- Revised 01/11/20035.95 MB
- Revised 22/05/20020.48 MB
- Revised 01/11/20010.66 MB
- Revised 01/07/20010.66 MB
- Revised 01/06/19990.65 MB
- Revised 01/11/19980.65 MB
- Revised 10/02/19980.65 MB
- Revised 31/10/19950.59 MB
- Revised 28/05/19950.59 MB
- Revised 01/11/19940.55 MB
- Revised 19/02/19940.55 MB
- Revised 05/02/19940.55 MB
- Revised 01/05/19930.55 MB
- Revised 21/03/19930.56 MB
- Revised 20/02/19930.56 MB
- Revised 01/11/19920.55 MB
- Revised 21/07/19920.55 MB
- Revised 03/07/19920.54 MB
- Revised 05/06/19920.54 MB
- Revised 21/12/19910.52 MB
- Revised 06/09/19910.52 MB
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Changes over time for: Division 4.5.
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- Signature words omitted by S.I. 2019/1422 reg. 6(10)
- Art. 1(8) inserted by S.I. 2019/1422 reg. 6(2)(b)
- Art. 1(8)(a)(ii)(bb) omitted in earlier amending provision S.I. 2019/1422, reg. 6(2)(b) by S.I. 2020/1453 reg. 14(16)(a)(i)
- Art. 1(8)(b) words substituted in earlier amending provision S.I. 2019/1422, reg. 6(2)(b) by S.I. 2020/1453 reg. 14(16)(a)(ii)
- Art. 1(8)(c)(ii) omitted in earlier amending provision S.I. 2019/1422, reg. 6(2)(b) by S.I. 2020/1453 reg. 14(16)(a)(iii)
- Annex 1a para. 1.1 words substituted by S.I. 2019/1422 reg. 6(11)(a)
- Annex 1a para. 1.2 words substituted by S.I. 2019/1422 reg. 6(11)(b)
- Art. 2a(3)(e) words substituted by S.I. 2019/1422 reg. 6(4)(c) (This amendment not applied to legislation.gov.uk. Reg. 6(4)(c) substituted immediately before IP completion day by S.I. 2020/1453, regs. 1(2)(b), 14(16)(c)(ii))
- Art. 2a(3)(e) words substituted by S.I. 2019/1422, reg. 6(4)(c) (as substituted) by S.I. 2020/1453 reg. 14(16)(c)(ii)
- Art. 3 words substituted by S.I. 2019/1422 reg. 6(5)(a)
- Art. 3 words substituted by S.I. 2019/1422 reg. 6(5)(b)
[F14.5. Calculation of triacylglycerols composition (moles %) from fatty acid composition data (area %) U.K.
4.5.1. Determination of fatty acid composition U.K.
Fatty acid composition is determined by ISO 5508 by means of a capillary column. The methyl esters are prepared according to COI/T.20/Doc. No 24.
4.5.2. Fatty acids for calculation U.K.
Glycerides are grouped by their Equivalent Carbon Number (ECN), taking into account the following equivalencies between ECN and fatty acids. Only fatty acids with 16 and 18 carbon atoms were taken into consideration, because only these are important for olive oil. The fatty acids should be normalised to 100 %.
| Fatty acid (FA) | Abbreviation | Molecular weight (MW) | ECN |
|---|---|---|---|
| Palmitic acid | P | 256,4 | 16 |
| Palmitoleic acid | Po | 254,4 | 14 |
| Stearic acid | S | 284,5 | 18 |
| Oleic acid | O | 282,5 | 16 |
| Linoleic acid | L | 280,4 | 14 |
| Linolenic acid | Ln | 278,4 | 12 |
4.5.3. Conversion of area % into moles for all fatty acids (1) U.K.
4.5.4. Normalisation of fatty acid moles to 100 % (2) U.K.
The result gives the percentage of each fatty acid in moles % in the overall (1, 2, 3–) position of the TAGs.
Then the sum of the saturated fatty acids P and S (SFA) and the unsaturated fatty acids Po, O, L and Ln (UFA) are calculated (3):
4.5.5. Calculation of the fatty acid composition in 2- and 1, 3- positions of TAGs U.K.
The fatty acids are distributed to three pools as follows: one for 2- position and two identical for 1- and 3- positions, with different coefficients for the saturated (P and S) and unsaturated acids (Po, O, L and Ln).
4.5.5.1. Saturated fatty acids in 2-position [P(2) and S(2)] (4): U.K.
4.5.5.2. Unsaturated fatty acids in 2-position [Po(2), O(2), L(2) and Ln(2)] (5): U.K.
4.5.5.3. Fatty acids in 1,3-positions [P(1,3), S(1,3), Po(1,3), O(1,3), L(1,3) and Ln(1,3)] (6): U.K.
4.5.6. Calculation of triacylglycerols U.K.
4.5.6.1. TAGs with one fatty acid (AAA, here LLL, PoPoPo) (7) U.K.
4.5.6.2. TAGs with two fatty acids (AAB, here PoPoL, PoLL) (8) U.K.
4.5.6.3. TAGs with three different fatty acids (ABC, here OLLn, PLLn, PoOLn, PPoLn) (9) U.K.
4.5.6.4. Triacylglycerols with ECN42 U.K.
The triacylglycerols with ECN42 are calculated according to equations 7, 8 and 9 and are then given in order of expected elution in HPLC (normally only three peaks).
LLL
PoLL and the positional isomer LPoL
OLLn and the positional isomers OLnL and LnOL
PoPoL and the positional isomer PoLPo
PoOLn and the positional isomers OPoLn and OLnPo
PLLn and the positional isomers LLnP and LnPL
PoPoPo
SLnLn and the positional isomer LnSLn
PPoLn and the positional isomers PLnPo and PoPLn
The triacylglycerols with ECN42 are given by the sum of the nine triacylglycerols including their positional isomers. The results should be given to at least two decimal places.]
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